Rails Form Issues

Hey all. So i am creating a rails project...

i want to be able to create a resident through a site so that when i create the resident in a form the site id auto populates without end user input (as they wont know what the site id is.)

my sites_controller i have added the following :

def site_resident @site.resident.create(resident_params) end

and

private

def resident_params
  params.require(:resident).permit(:site_id, :unit_number, :f_name, :m_name, :l_name, :dob)
end

i am lined to the page but when i add the form it errors out i have also added this before action to the sites_controller.rb

before_action :set_site, only: [:show, :edit, :update, :destroy] before_action :site_resident, only: [:show, :edit, :update, :destroy]

this is what the form looks like

<%= form_for(@site.residents) do |f| %> --> This is what errors out i just dont know what to do here. <% if @site.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@site.errors.count, "error") %> prohibited this site from being saved:</h2>

  <ul>
  <% @site.errors.full_messages.each do |message| %>
    <li><%= message %></li>
  <% end %>